Subclasses don't inherit readonly option

[hulsed]

For example,

class ImmutableParameter(dataobject, readonly=True):
    b: float = 1.0
    def example_method(self):
        return 20

class ImmutableSubclass(ImmutableParameter):
    a: float = 2.0

I would expect (or like to have a way) for 'a' to be an immutable field without setting readonly=True as an option in the subclass. Instead, the following is possible:

ims = ImmutableSubclass()
ims.a = 3.0

I will note that the behavior for inherited fields is correct, returning the expected AttributeError

[intellimath]

What about this scenario:

    from recordclass import dataobject, Field
   
    class ImmutableParameter(dataobject, readonly=True):
          b: float = 1.0
          def example_method(self):
                   return 20

    class ImmutableSubclass(ImmutableParameter):
          a: float = Field(readonly=True, default=2.0)